Improvement in stencil-plates



UNITED S'rA'rns JOHN F. W. DORMAN, 0F BALTIMORE, MARYLAND.

'IMPROVEMENT IN streuen-PLATES.

Specication forming part of Letters Patent No. 129,271, dated J uly 16,1872.

To all whom'z't may concern:

Be it known that I, JOHN F. W. DORMAN, of the city and county ofBaltimore and State of Maryland, have invented certain Improvements inStencils, and in the manner of holding the same, of which the followingis a specification; and I do hereby declare that the same is a full,clear, and exact description of my said invention.

The nature of my invention consists in a projecting edge to thestencil-plate to assist in the securing of it to the frame and incertain springs and devices designed for the same purpose.

Figure 1 is a plan or top view of my invention. Fig. 2 is areversed planor bottomjview of the same. Fig. 3 is an end view of the same. Fig. 4 isa side view of the same. Fig. 5 is a cross-section of the same. Fig.6'is a top view of a stencil-plate. Fig. 7 is aside view of the same.Fig. 8 is an end view of the saine.

Similar letters of reference indicate similar parts of the invention.

The stencil-frame is composed of the five strips a, b, c, d, and e,riveted together, as shown at f. The clampingstrip is represented by g,and its handle by h. lIhe rubber-lining is shown by i. The thumb-screwbolts and nuts are indicated by k. The heads of the bolts are insertedin their countersunk holes in the center strip e, as shown at lo'. Atopposite corners of the frame I place small springs l projectingtherefrom, their object being to serve as stops to the stencil-plates.By their elasticity they will always project sufficiently below thesurface of the frame to meet their object, and still can never interferewith the bringing of the stencil-plates to a rm and full plane. Themanner of bending the ends of the stencil-plates n is shown at o. Theprojection p presses into the rubber i, as shown in Fig. 5, and assistsmaterially in the prevention -of the lateral movement of the plates whensubjected to the action of the stencil-brush. Springs are shown at m,attached to the strips g and e, by which they are separated when thecompression occasioned by the bolts lc is removed. The part n of thestencil-plate laps over the next plate to it, and so on, thus giving asmooth bottom surface, and preventing blotting of ink between theletters. v

If an address is to be marked the plates in the positions of thoseindicating the letters J F are first used, when the frame is reversedand the edge E brought to the bottom of the letters just marked, andthose W D then operated upon by the stencil-brush.

I am aware that a patent was granted September 20, 1859, to J. Bigelow,in whose specification are set forth parts answerin g to those which Idesignate by e and g and also that he uses rubber or leather to clampthe stencil-plates; neither do I propose claiming such parts asconstituting any portion of my invention. I am further aware that in thesame patent is set forth a bent end to the stencil-plate, which,however, has not the projectin g piece p, as herein shown.

Having thus described my invention, what I claim as new, and wish tosecure by Letters Patent, is-

l. In a stencil-plate, n, the projecting edge p, substantially as setforth, for the purposespecified.

2. .The springs l and m, arrran ged and fitted substantially asdescribed, for the purposes set forth.

3. A stencil formed by a combination of the 'separate plates n with aframe composed of the strips a, b, c, d, e, and g, bolt k,.rubber i, andsprings l and m, when arranged substantially in the manner set forth.

. J. F. W. DQRMAN. Witnesses:

WM. LOUGHRIDGE, W. H. WALSH.

